Three cubes, each of side 5 cm, are joined end to end. What is the total surface area of the resulting cuboid?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 350 cm2
Side of a cube = 5 cm
Three cubes joined together to make a cuboid -
Length of resulting cuboid = 15 cm
Breadth of resulting cuboid = 5 cm
Height of resulting cuboid = 5 cm
Total surface area of resulting cuboid = 2{lb + bh + hl} = 2{15(5) + 5(5) + 5(15)} = 350 cm2